Institutional Repository of Key Laboratory of Ocean Circulation and Wave Studies, Institute of Oceanology, Chinese Academy of Sciences
| Salinity variability in the tropical Pacific during the Central-Pacific and Eastern-Pacific El Nino events | |
| Qi, Jifeng1,2,3,4; Zhang, Linlin1,2,4; Qu, Tangdong3; Yin, Baoshu1,2,4,5; Xu, Zhenhua1,2,4; Yang, Dezhou1,2,4; Li, Delei1,2,4; Qin, Yinghao6 | |
| 2019-11-01 | |
| Source Publication | JOURNAL OF MARINE SYSTEMS
 |
| ISSN | 0924-7963 |
| Volume | 199Pages:14 |
| Corresponding Author | Yin, Baoshu(bsyin@qdio.ac.cn) |
| Abstract | In this study, sea surface salinity (SSS) variability associated with two types of El Nino in the tropical Pacific is investigated using observational data and reanalysis products for the period from 1979 to 2017. The results show that the central (CP) and eastern (EP) Pacific El Nino events have distinct SSS signatures. During a CP El Nino event, negative SSS anomalies appear in the western equatorial Pacific, and positive SSS anomalies in the east. During an EP El Nino event, large negative SSS anomalies occur in the central equatorial Pacific and positive SSS anomalies in the west, with the core of negative SSS anomalies being shifted by about 25 degrees longitude eastward compared with a CP El Nino event. A composite analysis indicates that large differences in SSS anomalies between the two types of El Nino are confined to the fresh pool and Nino 3.4 regions. Surface freshwater flux and horizontal advection are two major factors modulating the SSS there, but their relative importance in the two regions is different. In the fresh pool region, the positive SSS anomalies during an EP El Nino are much larger than those during a CP El Nino event. Their differences are mainly caused by surface freshwater flux anomalies, and horizontal advection anomalies play a secondary role. In the Nino 3.4 region, SSS anomalies are positive during a CP El Nino but negative during an EP El Nino. These differences are mainly caused by horizontal advection anomalies rather than freshwater flux anomalies associated with El Nino. |
| Keyword | Sea surface salinity El Nino Tropical Pacific ORAS4 reanalysis |
| DOI | 10.1016/j.jmarsys.2019.103225 |
| Indexed By | SCI |
| Language | 英语 |
| Funding Project | National Key research and development Plan Sino-Australian Center for Healthy Coasts[2016YFE0101500] ; National Natural Science Foundation of China[41506020] ; National Natural Science Foundation of China[41776021] ; Foundation for Innovative Research Groups of NSFC[41421005] ; Strategic Pioneering Research Program of CAS[XDA19060202] ; NSFC-Shandong Joint Fund for Marine Science Research Centers[U1406401] ; Aoshan Sci-Tec Innovative Project of Qingdao National Laboratory for Marine Science and Technology[2016ASKJ02] ; Natural Science Foundation of Shan Dong[ZR2016DQ04] ; National Key Research and Development Plan Sino-Australian Center for Healthy Coasts[2016YFE0101500] ; National Natural Science Foundation of China[41506020] ; National Natural Science Foundation of China[41776021] ; Foundation for Innovative Research Groups of NSFC[41421005] ; Strategic Pioneering Research Program of CAS[XDA19060202] ; NSFC-Shandong Joint Fund for Marine Science Research Centers[U1406401] ; Aoshan Sci-Tec Innovative Project of Qingdao National Laboratory for Marine Science and Technology[2016ASKJ02] ; Natural Science Foundation of Shan Dong[ZR2016DQ04] |
| WOS Research Area | Geology ; Marine & Freshwater Biology ; Oceanography |
| WOS Subject | Geosciences, Multidisciplinary ; Marine & Freshwater Biology ; Oceanography |
| WOS ID | WOS:000486133400015 |
| Publisher | ELSEVIER |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://ir.qdio.ac.cn/handle/337002/162745 |
| Collection | 海洋环流与波动重点实验室 |
| Corresponding Author | Yin, Baoshu |
| Affiliation | 1.Chinese Acad Sci, Inst Oceanol, CAS Key Lab Ocean Circulat & Waves, 7 Nanhai Rd, Qingdao 266071, Shandong, Peoples R China 2.Pilot Natl Lab Marine Sci & Technol Qingdao, Qingdao, Shandong, Peoples R China 3.Univ Calif Los Angeles, Joint Inst Reg Earth Syst Sci & Engn, Los Angeles, CA USA 4.Chinese Acad Sci, Ctr Ocean Megasci, Qingdao, Shandong, Peoples R China 5.Univ Chinese Acad Sci, Beijing, Peoples R China 6.Natl Marine Environm Forecasting Ctr, Beijing, Peoples R China |
| First Author Affilication | Institute of Oceanology, Chinese Academy of Sciences; Center for Ocean Mega-Science, Chinese Academy of Sciences |
| Corresponding Author Affilication | Institute of Oceanology, Chinese Academy of Sciences; Center for Ocean Mega-Science, Chinese Academy of Sciences |
| Recommended Citation GB/T 7714 | Qi, Jifeng,Zhang, Linlin,Qu, Tangdong,et al. Salinity variability in the tropical Pacific during the Central-Pacific and Eastern-Pacific El Nino events[J]. JOURNAL OF MARINE SYSTEMS,2019,199:14. |
| APA | Qi, Jifeng.,Zhang, Linlin.,Qu, Tangdong.,Yin, Baoshu.,Xu, Zhenhua.,...&Qin, Yinghao.(2019).Salinity variability in the tropical Pacific during the Central-Pacific and Eastern-Pacific El Nino events.JOURNAL OF MARINE SYSTEMS,199,14. |
| MLA | Qi, Jifeng,et al."Salinity variability in the tropical Pacific during the Central-Pacific and Eastern-Pacific El Nino events".JOURNAL OF MARINE SYSTEMS 199(2019):14. |
| Files in This Item: | ||||||
| File Name/Size | DocType | Version | Access | License | ||
| Qi-2019-Salinity-var（6846KB） | 期刊论文 | 出版稿 | 限制开放 | CC BY-NC-SA | View | |
| Salinity variability（6846KB） | 期刊论文 | 出版稿 | 限制开放 | CC BY-NC-SA | View | |
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